School of Chemistry and Biochemistry to Host Charles L. Liotta Symposium

This year marks Regents Professor Emeritus Charles Liotta’s 50th at Georgia Tech, and the celebration is on.

Grad Students and the Quest for the Origins of Life

Want to learn how life began? You can do that. Chemistry and Biochemistry graduate student Eric Parker tells how.

Seminars & Events

Meeting - Thursday, October 23, 2014 - 11:00am - MoSE 3201A
Special Seminar - Thursday, October 23, 2014 - 1:00pm - MoSE 1224
Special Seminar - Thursday, October 23, 2014 - 2:00pm - MoSE 1224
Prof. Gregory Hartland - University of Notre Dame
Colloquium - Thursday, October 23, 2014 - 4:00pm - MoSE G011

Featured Research

Article Title
Research Authors
Suenne Kim, Si Zhou, Yike Hu, Muge Acik, Yves J. Chabal, Claire Berger, Walt de Heer, Angelo Bongiorno & Elisa Riedo., .
Citation
Nature Materials (2012), Vol. 11, 544-549
Miscellaneous Details
National Science Foundation

Graphene oxide potentially has multiple applications. The chemistry of graphene oxide and its response to external stimuli such as temperature and light are not well understood and only approximately controlled. This understanding is crucial to enable future applications of this material. Here, a combined experimental and density functional theory study shows that multilayer graphene oxide produced by oxidizing epitaxial graphene through the Hummers method is a metastable material whose structure and chemistry evolve at room temperature with a characteristic relaxation time of about one month. At the quasi-equilibrium, graphene oxide reaches a nearly stable reduced O/C ratio, and exhibits a structure deprived of epoxide groups and enriched in hydroxyl groups. Our calculations show that the structural and chemical changes are driven by the availability of hydrogen in the oxidized graphitic sheets, which favours the reduction of epoxide groups and the formation of water molecules.

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